![](https://static.dezeen.com/uploads/2015/08/Museum-for-Qujing-Culture-Center-by-Hordor-Design-Group-and-Atelier-Alter_dezeen_sqa.jpg)
Qujing History Museum in China features a roof shaped like an upside-down staircase
Chinese firms Atelier Alter and Hordor Design Group have completed a major new museum of natural history in China, featuring a roof described by the architects as a "vertical landscape of concrete" (+ slideshow). More